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ADS1248IPWR Datasheet(PDF) 4 Page - Texas Instruments

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Part # ADS1248IPWR
Description  24-Bit Analog-to-Digital Converters for Temperature Sensors
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

ADS1248IPWR Datasheet(HTML) 4 Page - Texas Instruments

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ADS1246
ADS1247
ADS1248
SBAS426C – AUGUST 2008 – REVISED AUGUST 2009 .................................................................................................................................................. www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Minimum/maximum specifications apply from –40°C to +105°C. Typical specifications are at +25°C. All specifications at
AVDD = +5V, DVDD = +3.3V, AVSS = 0V, VREF = +2.048V, and oscillator frequency = 4.096MHz, unless otherwise noted.
ADS1246, ADS1247, ADS1248
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
CURRENT SOURCES (IDACS)
Output current
50, 100, 250, 500, 750, 1000, 1500
µA
Voltage compliance
All currents
AVDD – 0.7
V
Initial error
All currents, each IDAC
–6
±1.0
6
% of FS
Initial mismatch
All currents, between IDACs
±0.03
% of FS
Temperature drift
Each IDAC
200
ppm/°C
Temperature drift matching
Between IDACs
10
ppm/°C
SYSTEM MONITORS
Voltage
TA = +25°C
118
mV
Temperature
sensor reading
Drift
405
µV/°C
GENERAL-PURPOSE INPUT/OUTPUT (GPIO)
VIH
0.7AVDD
AVDD
V
VIL
AVSS
0.3AVDD
V
Logic levels
VOH
IOH = 1mA
0.8AVDD
V
VOL
IOL = 1mA
0.2 AVDD
V
DIGITAL INPUT/OUTPUT (other than GPIO)
VIH
0.7DVDD
DVDD
V
VIL
DGND
0.3DVDD
V
Logic levels
VOH
IOH = 1mA
0.8DVDD
V
VOL
IOL = 1mA
DGND
0.2 DVDD
V
Input leakage
DGND < VIN < DVDD
±10
µA
Frequency
1
4.5
MHz
Clock input
(CLK)
Duty cycle
25
75
%
Internal oscillator frequency
3.89
4.096
4.3
MHz
POWER SUPPLY
DVDD
2.7
5.25
V
AVSS
–2.5
0
V
AVDD
AVSS + 2.7
AVSS + 5.25
V
Normal mode, DVDD = 5V,
230
µA
data rate = 20SPS, internal oscillator
DVDD current
Normal mode, DVDD = 3.3V,
210
µA
data rate = 20SPS, internal oscillator
Sleep mode
0.2
µA
Converting, AVDD = 5V,
225
µA
data rate = 20SPS, external reference
Converting, AVDD = 3.3V,
212
µA
data rate = 20SPS, external reference
AVDD current
Sleep mode
0.1
µA
Additional current with internal reference
180
µA
enabled
AVDD = DVDD = 5V,
data rate = 20SPS, internal oscillator,
2.3
mW
external reference
Power dissipation
AVDD = DVDD = 3.3V,
data rate = 20SPS, internal oscillator,
1.4
mW
external reference
TEMPERATURE RANGE
Specified
–40
+105
°C
Operating
–40
+125
°C
Storage
–60
+150
°C
4
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Copyright © 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): ADS1246 ADS1247 ADS1248


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